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Flowering Plant Gateway
Various paths for exploration or comparison of four major flowering plant classification systems (Cronquist, Takhtajan, Thorne and the Angiosperm Phylogeny Group system). From Texas A&M University.
http://www.csdl.tamu.edu/FLORA/newgate/cro...
OSU Seed Biology Program - SeedID Index
Photographs of the seeds of selected plants.
http://www.ag.ohio-state.edu/~seedbio/seed...
Angiosperms Image Gallery
Extensive collection, organized by family.
http://www.albion.edu/plants/gallery.asp?g...
The Families of Flowering Plants
Offers descriptions, illustrations, and identification retrieval.
http://delta-intkey.com/angio/
Angiosperm Phylogeny
Phylogenetic trees, technical descriptions of all orders and families, references, and links. By Peter Stevens of the Missouri Botanical Garden.
http://www.mobot.org/MOBOT/Research/APweb/
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